I have a DELL 5547 laptop and on Ubuntu the brightness key works by default without any modification, I read Intel drivers are already included by default in the kernel yet the keys do not work on Debian, I tried to search a workaround but returned unsuccessful, is there anyone with a similar configuration able to help me? The laptop also has a AMD VGA but like in Windows its the onboard Intel that control the screen.
thank you for reading.
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Intel 4400 brightness key
Re: Intel 4400 brightness key
What do you mean by not working? Please elaborate.
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- stevepusser
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Re: Intel 4400 brightness key
Yet another hardware problem, yet the poster provides nothing about the hardware except the laptop model.
Anyhoo, the Google says you have a 4th generation Broadwell chipset, so you should use the backports kernel per this guide: https://forums.bunsenlabs.org/viewtopic.php?id=1185
You will also need non-free firmware for the AMD graphics if you decide to try and get the switchable graphics working with the xorg free radeon driver. The Debian non-free AMD fglrx driver will not build against the backports kernel--I have a patched version that will let the 64-bit version build up to the 4.9 kernel, but the 32-bit will error out.
There are some directions in the Debian wiki that may or may not work with the backported Mesa in jessie-backports: https://wiki.debian.org/AtiHowTo#Hybrid_Graphics
Anyhoo, the Google says you have a 4th generation Broadwell chipset, so you should use the backports kernel per this guide: https://forums.bunsenlabs.org/viewtopic.php?id=1185
You will also need non-free firmware for the AMD graphics if you decide to try and get the switchable graphics working with the xorg free radeon driver. The Debian non-free AMD fglrx driver will not build against the backports kernel--I have a patched version that will let the 64-bit version build up to the 4.9 kernel, but the 32-bit will error out.
There are some directions in the Debian wiki that may or may not work with the backported Mesa in jessie-backports: https://wiki.debian.org/AtiHowTo#Hybrid_Graphics
MX Linux packager and developer
Re: Intel 4400 brightness key
That's a huge assumption. The OP hasn't even said what version of Debian or Ubuntu they're using/tried.stevepusser wrote:... so you should use the backports kernel ...
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Re: Intel 4400 brightness key
I don't think it's that's huge of an assumption; I think it's been well established that the stock Debian 3.16 kernel has poor Broadwell and up support--unless you have any evidence to the contrary?
MX Linux packager and developer
Re: Intel 4400 brightness key
Do you have any evidence that's the kernel they're using?
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Re: Intel 4400 brightness key
I have to assume stock Debian if the poster doesn't say anything...
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Re: Intel 4400 brightness key
@OP: which desktop environment are you using?
I have hotkey adjustment for the backlight with my Intel HD4600 with the jessie, jessie-backports and stretch kernels but only if xfce4-power-manager or GNOME shell is running.
I have hotkey adjustment for the backlight with my Intel HD4600 with the jessie, jessie-backports and stretch kernels but only if xfce4-power-manager or GNOME shell is running.
deadbang